$regfile = "m8def.dat"
$crystal = 1000000

Config Pinb.0 = Output
Config Pinb.1 = Output

Do
   Portb.0 = 1
   Portb.1 = 0
   Waitms 800
   Portb.0 = 0
   Portb.1 = 1
   Waitms 800
Loop

End